Term
| What separates individual skeletal muscles i.e. quadriceps femoris? |
|
Definition
| FIBROUS CONNECTIVE tissue called FASCIA separate individual skeletal muscles |
|
|
Term
| Describe the formation of a tendon i.e. Achilles tendon |
|
Definition
| The FASCIA that surrounds each muscle projects beyond the end of it's muscle fibers to form a CORDLIKE tendon |
|
|
Term
| Describe the attachment of a muscle to bone i.e. biceps brachii to the radius |
|
Definition
| FIBERS in a tendon intertwine with those in the bone's PERIOSTEUM, attaching themselves to the bone |
|
|
Term
| Distinguish between a tendon... |
|
Definition
| Fibers in a tendon intertwine with those in the bone's PERIOSTEUM, attaching themselves to the bone |
|
|
Term
|
Definition
| The CONNECTIVE TISSUES associated with a muscle form broad, fibrous sheets called APONEUROSES which may be attached to the coverings of adjacent muscles |
|
|
Term
|
Definition
| Layer of C.T. that CLOSELY SURROUNDS skeletal muscle |
|
|
Term
|
Definition
| Layer of C.T. that SURROUNDS each muscle fiber within a FASCICLE |
|
|
Term
| Explain why muscle fibers appear striated |
|
Definition
| Skeletal muscle fibers appear striated because of the arrangement of the PROTEIN FILAMENTS MYOSIN and ACTIN within the muscle fiber |
|
|
Term
|
Definition
| Sarcomere, Z band, H line, I band, A band |
|
|
Term
| Explain the functional relationship between the sarcoplasmic reticulum and the t-tubules |
|
Definition
| Each t-tubule lies between TWO ENLARGED PORTIONS of the sarcoplasmic reticulum called CISTERNAE near the region where the ACTIN and MYOSIN filaments overlap |
|
|
Term
| Explain how a motor nerve impulse can trigger a muscle contraction |
|
Definition
| When a nerve impulse reaches the end of a motor nerve fiber, some of VESICLES release a NEUROTRANSMITTER int the SYNAPTIC CLEFT. This action STIMULATES A MUSCLE FIBER TO CONTRACT |
|
|
Term
|
Definition
| Together, a MOTOR NEURON and the MUSCLE FIBER it controls constitute a motor unit |
|
|
Term
| Explain how the number or fibers w/in a motor unit affects muscular contractions |
|
Definition
| The fewer MUSCLE FIBERS in the MOTOR UNITS, the finer the movements that can be PRODUCED in a PARTICULAR MUSCLE |
|
|
